An information processing apparatus that is capable of preventing leakage of confidential information from data saved on a nonvolatile memory even when the apparatus makes a transition to a hibernation state. The information processing apparatus with a hibernation function has a volatile memory and a nonvolatile memory. A security-area determination unit determines whether a memory area allocated to the volatile memory is a security area. A transition unit to save data saved on a memory area of the volatile memory that is determined as a non-security area by the security-area determination unit and not to save data saved on a memory area of the volatile memory that is determined as a security area, when going to a hibernation state. A resuming unit writes the data that is saved on the nonvolatile memory back to the volatile memory at the time of resuming from the hibernation state.